– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 4 am Mon 19 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Mon 19 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMostly dry. Very mild (max 18°C on Wed afternoon, min 9°C on Mon morning). Wind will be generally light. | Days 4–6 Weather SummaryMostly dry. Very mild (max 13°C on Thu morning, min 5°C on Fri morning). Wind will be generally light. | |||||||||||||||||
Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | | | | |  | | | | | | | |  | | |
some clouds | clear | clear | clear | clear | clear | clear | clear | some clouds | clear | some clouds | clear | clear | clear | clear | some clouds | cloudy | some clouds | |
Cloud base (m) | 4000 | 8150 | 8800 | 8550 | 1850 | 1600 | 1800 | 6750 | 6150 | 9150 | ||||||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
max °C | 12 | 13 | 9 | 14 | 17 | 13 | 16 | 18 | 14 | 13 | 13 | 8 | 8 | 10 | 7 | 12 | 13 | 11 |
min °C | 9 | 12 | 9 | 9 | 16 | 12 | 12 | 16 | 12 | 11 | 11 | 6 | 5 | 10 | 6 | 7 | 13 | 11 |
chill °C | 9 | 12 | 9 | 8 | 16 | 12 | 12 | 16 | 12 | 11 | 11 | 6 | 4 | 10 | 5 | 6 | 13 | 11 |
Freezing level m | 2350 | 2350 | 2550 | 2750 | 2950 | 3000 | 2900 | 3050 | 2950 | 2650 | 2250 | 1850 | 1550 | 2100 | 2650 | 3050 | 3150 | 3150 |
 | 7:33 | — | — | 7:35 | — | — | 7:35 | — | — | 7:37 | — | — | 7:39 | — | — | 7:41 | — | — |
 | — | 6:10 | — | — | 6:08 | — | — | 6:07 | — | — | 6:05 | — | — | 6:02 | — | — | 6:01 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Very mild (max 18°C on Wed afternoon, min 9°C on Mon morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 13°C on Thu morning, min 5°C on Fri morning). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table.For a wider overview of the weather, consult the Weather Map of Washington.